Contoured to fit comfortably in the palm of your hand, the Model 520DX "Green Bullet" microphone produces the unique sound that has made it a legend among harmonica players.
The 520DX features a volume control knob at the base of the microphone that allows musicians to make adjustments to suit their needs during a live performance. An attached cable with a standard 1/4-inch phone plug allows the microphone to be connected to a high-impedance device.
Connect the 520DX directly into a guitar amplifier to produce the classic blues harp sound. Use the following guidelines:
The volume setting of the guitar amplifier may have a significant effect on the overall tone produced. Experiment with different microphone and amplifier volume settings to achieve the desired effect.
To connect the 520DX to a low impedance device, such as a mixer, use a low-to-high impedance-matching line transformer, such as the Shure model A95U.
The 520DX can be rewired for low impedance, but this disables the volume control. Contact the Shure Applications Group at (847) 600-8440 for more information.
Dynamic (moving coil)
100 to 5,000 Hz
at 1kHz, open circuit voltage
-38.0 dBV/Pa (13 mV) 
Positive pressure on diaphragm produces positive voltage on tip with respect to sleeve (ground) of microphone output phone plug connector
6.1 m (20 ft) two conductor shielded with standard 1/4-inch phone plug attached (supplied wired for high-impedance, unbalanced connection)
Green and chrome finished die casting
63 mm (2.5 in.) max diameter, 82.6 mm (3 1/4 in.) long
737 g (26 oz.)
 1 Pa = 94 dB SPL
The RED lead is the high-impedance audio output; the SHIELD is the audio return and case ground.
The Model 520DX Green Bullet Microphone is supplied wired for high-impedance, unbalanced operation with the 1/4-inch phone plug.
Cartridge for 520DX
Cable and Plug
Volume Control Pot
This product meets the Essential Requirements of all relevant European directives and is eligible for CE marking.
The CE Declaration of Conformity can be obtained from: www.shure.com/europe/compliance
Authorized European representative:
Shure Europe GmbH
Headquarters Europe, Middle East & Africa
Department: EMEA Approval
75031 Eppingen, Germany
Phone: +49-7262-92 49 0
Fax: +49-7262-92 49 11 4